Geoege hunzmgee



(No Model.) v

G. HUNZINGER.

CHAIR.

Patented Feb. 8, 1887.

ATES

GEORGE HUNZINGER,

OF NEW YORK, N. Y.

CHAlR.

SPECIFICATION forming part of Letters Patent No. 357,388. dated February 8, 1887.

Application filed September 3, 1886. Serial No. 212,584. (No model.)

To a.ZZ whom it may concern.-

Be it known that I, GEORGE HUNZINGER, of the city and State of New York, have invented an Improvement in Chairs, of which the following is a specification.

This invention relates to the class of chairs in which the back yields to pressure from the person seated in it.

I make the base of the chair with triangular side frames rigidly connected together, and to this base the back-frame is pivoted. The seat-frame is also pivoted to the front part of the base-frame, and the arm-pieces extend from the apex of each side frame to the backframe, and these arms are extensible and provided with contractile springs. By this construction the back-frame will yield, and the spring arms will extend so that the chair-back can be inclined, and the seat-frame, being suspended at the back edge from the back-frame, accommodates itself to the position of the other parts.

In the drawings, Figure 1 is a vertical section through the chair seat and back, a portion of the arm also being in section; and Fig. 2 is a front elevation of the chair.

The base-frame is composed of the front legs, A, the inclined back legs, B, connected at their upper ends to the front legs, and the horizontal rails O, uniting the front and back legs, and the cross-rails D, uniting the respective triangular frames of the base.

The back-frame E is usually rectangular, or nearly so, and it is pivoted at F to the back legs, B. The seat-frame G is pivoted G to the front legs, A, and at the back such seat is suspended from the back-frame E, preferably by the flexible material forming the upholstering. The seat-frame and back are to be caned, upholstered, or otherwise completed, as usual.

The arm-pieces extend from the upper ends of the front legs, A, to the back-frame E, and these arm-pieces are each formed of a rod or bar, H, fastened to the front leg, a rod or bar,

K, fastened to the back leg, and a saddlepiece, I, inclosing the contiguous ends of the bars H and K, the saddle-piece I forming an arm-rest and inclosing the contiguous ends of the bars H and K, and this saddle-piece is preferably connected to the bar K. Beneath the bars H and K, and within the saddlepiece, there is a contractile spring, M, the ends of which are connected, respectively, to said bars H and K, preferably by the downwardlyprojecting pins 0. \Vhen pressure is applied against the back-frame by a person seated in the chair, the back-frame will swing upon its pivots F and the springs M will be extended, and these springs will contract and restore the parts to their normal position when pressure upon the back is relieved.

By this improvement the chair is rendered very comfortable for the person sitting in the same, as the back will remain in a more or less inclined position, according to pressure applied to the same, and a rocking motion may be given to the back, if desired, the armrests moving with the back and sliding backward and forward at their front ends upon the bars H.

I am aware that compression-springs have been used between the sliding parts of chairarms; also, that a chair has been provided with a pivoted back, a seat hinged at its front end, with the rear end of the seat resting loosely on supports on the lower end of the back, and in which the weight on the seat tends to raise up the back.

I claim as my invention 1. The combination, with the base having triangular side frames, of the back-frame pivoted to the base, the seat-frame pivoted to the front legs and suspended at its back edge from the back-frame, and the extensible spring armpieces between the upper ends of the front legs and the back-frame, substantially as set forth.

2. The base-frame formed of the front legs, the inclined back legs connected at their upper ends to the front legs, and the connectingrails, in combination with the back-frarne'pivoted to the back legs, the seat-frame, and the extensible yielding arm-pieces between the upper ends of the front legs and the back-frame, substantially as set forth.

3. The combination, with the base-frame, the pivoted back-frame, and the seat pivoted near its front edge and suspended from the ends to the respective bars HK, substantially back-frame, of the bars H, connected to the as set forth. upper ends of the front legs, the bars K, c0n- Signed by me this 27 th day of August, 1886. 10

nected to the back-frame, the saddles Lform- GEO. HUN ZINGER. 5 ing arm-rests and covering the adjacent ends Witnesses:

of the bars-H K, and the contractile springs Gno. T. PINCKNEY,

within the saddle-pieces and connected at their HAROLD SERRELL. 

